The packed column supercritical fluid chromatography has risen as a promising alternative separation technique to the conventional liquid and gas chromatography. Although many advantages compared other chromatographic techniques, its mechanism is not fully understood due complex combination effects of parameters on quality lacking global strategies for studying mechanisms. This review aims prov...

Liquid extraction is a well-known separation process that has been widely used in the chemical industry for many years, example, selective purification of oil fractions, liquefied gases from hydrogen sulfide, production petrochemicals, recovery metals, nuclear fusion, food and pharmaceutical industry. On-going elaborations aimed at engineering solution search order to improve mass-transfer proc...

Current methods of analysis for ethylene oxide (EO) in medical devices include headspace and simulated-use extractions followed by gas chromatography with either a packed or a capillary column. The quantitation limits are about 0.5-1.0 microg/g for a packed column and about 0.1-0.2 microg/g for a capillary column. The current allowable levels of EO on medical devices sterilized with EO gas as o...

Fibrous materials are prominent among novel chromatographic supports for the separation and purification of biomolecules. In this work, strong anion exchange, quaternary ammonium (Q) functional fibrous adsorbents were evaluated with regards to their physical and functional characteristics. A column packed with Q fibrous adsorbent illustrated the good column packing efficiency of theoretical pla...

In this work, the recovery of Cu from large waste printed circuit board (PCB) pieces by biogenic ferric sulphate at high solid to liquid ratio was studied. PCB parts were packed in a column and constantly recirculated. A oxidation reduction potential (ORP) decrease observed leaching due ion consumption; drop caused slower copper dissolution kinetics. After 25 days, 62.2% leached PCBs column. co...

Packed open-cell foams are proposed as an alternative to standard packed bed configuration commonly adopted for the adsorption columns of a temperature swing process. In this contribution, heat transfer in column with foam is investigated by experimental and modeling analysis, comparison bed. The introduction allows more rapid transitions substantial reduction gradients within impact enhancemen...

Determination of sorption distribution coefficients (K(d)) of organic compounds by a dynamic soil column chromatography (SCC) method was developed and validated. Eurosoil 4, quartz, and alumina were chosen as exemplary packing materials. Heterocyclic aromatic compounds were selected in the validation of SCC. The prerequisites of SCC with regard to column dimension, packing procedure, and sample...

We describe a new extension to ScaLAPACK [2] for computing with symmetric (Hermi-tian) matrices stored in a packed form. The new code is built upon the ScaLAPACK routines for full dense storage for a high degree of software reuse. The original ScaLAPACK stores a symmetric matrix as a full matrix but accesses only the lower or upper triangular part. The new code enables more efficient use of mem...